#include <stdio.h>
#include <string.h>
#include <assert.h>
char* my_strcpy( char* dest, const char* src)
{
	assert(dest && src);
	char* ret = dest;
	while (*dest++ = *src++)
	{
		;
	}
	
	return ret;
}
int main()
{
	char arr[] = "ABC";
	char arr2[] = "eeeeeeee"; 
	//strcpy_s(arr,arr2);
	my_strcpy(arr, arr2);

	printf("%s", arr);
}